1551220616600 has 24 divisors (see below), whose sum is σ = 3606587934060. Its totient is φ = 620488246560.

The previous prime is 1551220616579. The next prime is 1551220616633. The reversal of 1551220616600 is 66160221551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3878051342 + ... + 3878051741.

Almost surely, 2^{1551220616600} is an apocalyptic number.

1551220616600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1551220616600 is an abundant number, since it is smaller than the sum of its proper divisors (2055367317460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551220616600 is a wasteful number, since it uses less digits than its factorization.

1551220616600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7756103099 (or 7756103090 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 1551220616600 in words is "one trillion, five hundred fifty-one billion, two hundred twenty million, six hundred sixteen thousand, six hundred".